Stretch-wrapped package, process and apparatus
US4050221A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1974 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Jul 30, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B53/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
This invention provides a process for making a unitary package which comprises a load that has a band formed of plural layers of a stretched material wrapped around it. Basically the process comprises the steps of: placing a load on a support; locating a rolled-up sheet of stretchable material on dispenser means adjacent to the support; withdrawing a leading edge of the material from the dispenser means and holding that leading edge against the load; initiating substantially unrestricted relative movement between the support and dispenser means to cause a sufficient amount of the material to overwrap at least a part of the load; subsequently continuing the relative movement but restricting it such that the material will then be stretched and causing a sufficient amount of the stretched material to be dispensed from the dispenser means to provide a band comprising plural layers of the material around the load; and fastening the trailing edge of the dispensed stretched material to at least one of the previously dispensed band-forming layers. The present invention is also directed toward a product that is produced by this process and to certain apparatus which can be utilized to perfo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.